深井膏体降压满管输送数值模拟研究

为提高深井矿山充填管道输送系统的可靠性，基于工程流体力学、计算流体动力学以及管道自流输送理论，结合某矿山实际情况，针对深井管道不满流输送带来的巨大冲击磨损以及管道输送不稳定等问题，提出低压满管流输送，对比3种管道组合方案特点，并运用FLUENT软件进行数值模拟与分析。研究结果表明，与高压满管流输送相比，低压满管流输送能使该矿山管道系统最大压力大大降低：当垂直管径与水平管径比值（k）约为0.53，系统流量提升到80 m³/h时，管道系统最大压力降为0.309 MPa，系统满管率由8.44%提高到65.6%，且方案3的管道组合可以保证浆体流动的稳定，管壁穿孔和磨损问题得到显著改善。

Numerical Investigation of Depressurization Full-pipe Transportation of Paste in Deep Mine

For the purpose of improving the reliability of backfill pipe transportation system,based on engineering fluid mechanics,computational fluid dynamics and pipeline self-flowing transportation theories,low pressure full-flowing transportation mechanics was put forward,which aimed at dealing with the tremendous impact wear and instability of pipeline transportation in a mine,combined with numerical simulating and analyzing by the software of FLUENT.The results show that the low pressure full-flowing transportation system can largely alleviate the max pressure in pipeline system,compared with high pressure full-flowing transportation system.When the value of k is 0.53 and increasing flux to 80 m3/h simultaneously,the full-flow ratio of this system is able to be improved by about 8 times.The piping failure can be reduced remarkably and make sure the stability of the slurry flowing by implementing the plan three.